Arched roof made of undulated sheet iron



Sm; 1L w3. E. DEBONGNIE ARCHED E OOF MADE OF UNDULATED SHEET IRON Filed'Nov. 30 1921 mmm/W P 17V/7V, I

WAK/vw NVENTOR GNE DEBONGNE En? y TTOQNEX Patented Sept. II, 11923.,

narran stares :anoUAan EUGN'E DEBONGNIE, or yianacninvr sfrE. AGATHE, BELGIUM.

ARCHED ROOF MADE OF UNDULATED SHEET IRON.

Application filed November 30, 1921i. Serial No. 518,845.

To al] 'ic/10m t may concer/t.'

Be it known that I, EDOUARD EUGNE DEBONGNIE, a subject of the King of Belgium, and resident of Berchem Ste. Agathe, Belgium, have invented certain new and use ful Improvements in Arched Roofs Made of Undulated Sheet Iron, of whichV the following is a specification.

The present invention relates to arched undulated iron roofs; such roofs are very cheap as they do not require any framework, a small number of ties being sufficient for neutralizing the horizontal components of the weight at the supporting points of the roofs. On the other hand, they are absolutely watertight and the differences of temperature do not influence same because the arched roof freely dilates under the action of the variations of temperature.

I-Iowever, until now, only arched roofs with reduced spans have been constructed. Large spans require stronger sheet iron, which increases the weight, whereby the framework should be reinforced accordingly.

Furthermore no panes can be applied in such roofs, the use of which is thus reduced to buildings not requiring lighting through the roof. v

Finally the sustaining columns of such roofs are not connected to each other by rigid stays in a transverse direction, and in order to resist to the wind, these columns and their groundwork should be of large dimensions.

The present invention has for its object a particular construction of such light arched roofs whereby the above mentioned drawbacks are removed and consists in supporting the mediate arched roof portion of reduced span by means of beams in turn supported either by transverse beams or girders or by brackets secured to the columns.

In order to clearly show the nature of the invention, the novel roofing is shown in the accompanying drawing, in which:

Figs. l and 2 show two usual arched roofs made of undulated sheet iron, the first one supported on columns, the other on the walls of the building.

Figs. 3 and 4 show one constructive form of the invention, the arched roof being sup-- ported upon iron beams or reinforced concrete beams forming parts of girders of the same material and supported in turn upon the columns or walls of the building.

Figs. 5 and 6 show a further constructive form in which the iron or reinforced concrete beams supporting the arched roof is formed at the end of brackets mounted at either side on the columns or walls. n

Fig. 7 shows a third constructive form of the device, the iron beams supporting the arched roof projecting above the girders of which they form a portion. Y

Fig. 8 shows a fourth constructive form of the invention, the iron beams supporting the arched roof projecting below the girders.

Referring to these drawings, Figs. l and 2 show the usual arched roofing l made of undulated sheet iron and supported upon columns 3 as shown in Fig. l, or upon walls 3 as in F ig. 2, according to the usual construction.

In Fig. 3, the arched portion 11 of the roof is supported by girders 4, 4, which in turn are supported on or form part of transverse beams 21 supported by the colums 31 at 5. In Fig. 4, the construction is similar to that of Fig. 3, the columns 31 and beams 21 and 4l being formed of reinforced concrete.

It may be readily seen that the span between the columns or walls 31, 31 is greatly enlarged, whilst the span of the middle portion covered by the arched roof l1 is the same as in Fig. l and 2. The lateral portions 5 of the girders 21 enable the use of glass panels for lighting the inner of the building.

Figs. 5 and G show a constructive form of the invention in which the girders 41, 41, supporting the arched roof l2 are formed at the end of brackets 6 projecting from the columns or walls 32.

In the constructive form shown in Fig. 7 the beam 42 carrying the arched roof is supported on transverse beams or ties 22 carried on the columns or walls 33 and said beams project upwardly above the ties 22.

In the constructive form illustrated in Fig. 8, the beams 43 projects below the ties 22.

It may be readily understood that in these various constructive forms the arched roof of very reduced weight and of low cost is supported on intermediate parts, whereby the span of the building may be considerablyenlarged and at the same time panes may be applied all over the lateral parts of the roof at either side of the arched part.

The beams 4, 41, 42 or 41 may be considered as main beams and have a section suiiiciently great as to cover, without intermedi ate supports, the whole width of the building. The columns being eliminated, the girders 2 or 21 or 22 and the glass panels would be supported by means -of the beams l,v 41, 42 or 4:3. y

In Fig. 7 the projecting portion ofbeams l2 projecting above girderlflmay beprovided' with Window blinds or glass panes.

The beams, girders and thelike elements of the above construction may be made of any convenient material such vas iron, ren-.v forced concrete, Wood'and the like.

Having nov,T `fully described my said inven'tion `what I. claim and :desire to secure by Letters Patent is: f y

An improved arched, roof, comprising a narrow arched roof` portion made of undulated sheet metal covering the middlevportion of the roof of the building, longitudinal beams ortrfussessupporting the edges of i A-said roof portion, and-transverse .girders or brackets supporting said longitudinal beams or trusses, saidmtransverse girders or brackets' being designed to`rest on columns or Walls of `materiallygreater span than that of the arched roof7 whereby to provide space on each, side of the arched roof for lighting purposes.

ln testimony whereof I have hereunto set my hand in presence of two Witnesses.

yEDOUARD EUGENEVA IDEBONGNIE.

Titllesses y-Gfnonen DEBRooK,

.-EMIL VAW WARZELLI. 

